Insulator.



W. WEIOKEE.

INSULATOR.

APPLICATION FILED MAY 11,1907.

Patented May 16, 1911.

Inventor ifiglll'am Wicker.

UNITED STATES PAT NT. OFFICE.

WILLIAM WEICKER, OF HERMSDORF, GERMANY, ASSIGNOR TO PORZELLANFABRIK 3 .KAHLA, HERMSDOBF KLOSTERLAUSNITZ, F HERMSD 'RIF, GERMANY.

INSULATOR.

specification of Letters Patent.

iiTo all whom'it concern:

" Be it knownthat I, IVILLIAM Wnroitnn,

engineer, a subject of the German Empire.

residing in Hermsdorf, Sachsen-Altenburg, Germany, have invented certain new and useful-Improvements in Insulators, of which the following is a specification. v

The object of the present invention is to produce an insulator of high. resistance that 10 willvdischarge thedrops of water by electrostatic action and cause them to be dis charged laterally instead of being attracted downward toward-the lowerportion of the insulator or its supports. This result is effected by a special arrangement of the insulator whereby a'very strong electrostatic field is produced for the purpose of causing the drops to fly outward. For this purpose the insulator is provided with a roof as .trical connection with the wire.

nearly flatas possible and formed of a good conductor preferably metal, that is in elec- The roof cannot be horizontal as the water would not readily pass off therefrom, but itmust be comparatively flat. in ,order to cause the drops to fly ofi in a nearly horizontal di.-

.rection. The kinetic energy of the drops received by, the electrostatic discharge is strong enough to overcome the attraction of thesupports in their passage outward, and

arerepelled fromthe supports so that they lose alltheir attraction therefor. The efficiency of such a root can be increased by making aseries of hoods or plates below-the top metal one, the electrostatic action of which will tend to repel the drops. a

In the annexed drawings various forms of this invention are shown in which Figure l-shows an" insulator having three separate hoods in connection with a comparatively flat roof of metal. Fig. 2shows a similar arrangement with but two hoods. Fig. 3 shows another one with four hoods. Figs.4, 5 and 6 show other forms of hoods on the insulator. Figs. 7 and 8 show'other forms of insulators with the metal roof.

In the device shown'in Fig. 1, the insue lator a has three hoods at its bottom portion and is provided with ametal roof b somewhat dish-shaped. The conductor L may engage a groove or bit 0 in the insulator at one side or it may lie ina groove (1 at the top of the insulator.- In both of these places Patented-May 16, 1911.

the bare wire is in contact with the hood 6."

' In Fig.- 2, the wire L is placed below the l1ood'b,.but connected therewith by a conductor e.

In Fig- '3, the insulator a has but asingl hood 1', the insulator being otherwise similar to that-of Fig. 2.-

In Fig. 4 the insulator ahas three hoods 1, 2 and 3 diverging'outward or conicallyshaped.

Figs.'5 and 6 show asimilar arrangement with but two hoods.

. I Fig. 7 shows the insulator of more nearly cylindrical shape and corrugated on the outside and carrying the metal hood I) connected with the wire L by conductor 0. 4 8 shows a similar construction with a single hood 1.

Inall of these construct-ions theinsulator is provided with the comparatively fiat metal roof that is in direct electrical connection with the conductor and hence will receive an electrostatic charge. The drops falling 'from this roof will take a practically tangential direct-ion outward atfirst by reason of being charged with the electrostatic energy, and hence will not be influenced by the electrical attraction of the lower portion of the insulator.

'Having thus described my invention, I claim 5 K 1. An insulator for electric wires comprising a "non-conducting portion and a'- metal" roof secured thereto that is comparatively fiat and is in electrical connection with the wire supported on the insulator.

2. An insulator for electric wires comprising a body portion-of non-conductingmate- -1 ial,*a comparatively fiat dome-shaped top or roof secured to the insulator and a conductor secured to the under face of the root and adapted to connect with the conductor that is to be supported by the insulator.

In=witness whereo'fI have hereunto signed my name this-25 th day "of April*1907 in the. presence of two subscribing witnesses.

v .WILLIAM WEICKER. Witnesses: I

Guanine-Nanak, 

